Remove signing lines

.github/workflows/publish.yml

@@ -68,19 +68,14 @@ jobs:
           ssh-agent -a $SSH_AUTH_SOCK > /dev/null
           ssh-add - <<< "${{ secrets.NEXTMVBOT_SSH_KEY }}"
 
-          # echo "${{ secrets.NEXTMVBOT_SIGNING_KEY }}" > ~/.ssh/signing.key
-          # chmod 600 ~/.ssh/signing.key
-
           git config --global user.name "nextmv-bot"
           git config --global user.email "[email protected]"
           git config --global url."[email protected]:".insteadOf "https://github.com/"
-          # git config --global gpg.format ssh
-          # git config --global user.signingkey ~/.ssh/signing.key
 
       - name: commit new version
         run: |
           git add nextmv/__about__.py
-          git commit -S -m "Bump version to $VERSION"
+          git commit -m "Bump version to $VERSION"
           git push
           git tag $VERSION
           git push origin $VERSION